SANSUI SP-XI

Commentary

This is a 2-way speaker system that uses DL cone woofer and emphasizes not only measurement but also listening feeling in the listening room.

A 25.5 cm cone type unit is used for the low range.
The cone paper uses DL cone, which is pulp cone coated with a special coating agent, reducing the strain component from the diaphragm.
In addition, the voice coil has been modified into a series four layer winding, and the smooth natural attenuation in the high frequency range suppresses the high frequency exposure.
In addition, low Q-up roll edge with damping agent applied on both sides is used to lower fo.

A 3.5 cm soft dome unit is used for the high-frequency band.
Plant-derived fiber is used for the diaphragm. Deformation of the diaphragm due to vibration is controlled and strain is reduced by braking with special damping agent and rear surface braking with glass wool of micron fiber.
The voice coil C. C. A. W. (copper coated aluminum wire) is used for the voice coil, and the high frequency range is expanded by the synergistic effect with the non-interference baffle plate, taking advantage of the wide directivity characteristic of the dome tweeter.
Aluminum die-cast is used for the frame to reduce unnecessary vibration.

The network employs a laminate core with a large dynamic margin, and the tweeter employs an attenuation characteristic of 18dB/oct. to reduce IM distortion due to low frequency.
In addition, volume type continuously variable level control is installed in the high frequency range.

The enclosure is a closed type, and the material of the board and reinforcement material are carefully examined.
In addition, by adding a large amount of sound absorbing material, it can reproduce a deep low sound with good articulation.
In addition, special polyurethane is attached to the front baffle plate to improve phase characteristics and directional characteristics.

Model Rating

Method	2-Way, 2-Speaker, Airtight Type, Bookshelf Type
Unit	For low band : 25.5 cm cone type For high-pass : 3.5 cm dome type
Frequency band	40 Hz to 20000 Hz
Maximum allowable input	50W
Impedance	8 Ω
Output sound pressure level	90dB/W/m
Crossover frequency	1500Hz
Network	High Cut:6dB/oct Low Cut:18dB/oct
Tweeter level	High Frequency : Volume Type Continuously Variable (3 Click Point)
External dimensions	Width 346x Height 570x Depth 295 mm
Weight	16.1kg